Thaumatopsis floridella, the Floridian grass-veneer, is a moth in the family Crambidae. It was described by William Barnes and James Halliday McDunnough in 1913.[1] It is found in North America, where it has been recorded from coastal areas in Florida, Georgia, Mississippi, South Carolina and North Carolina, New Jersey, New York, and Rhode Island.[2] It is also found in Cuba.
The wingspan is 23–31 mm. Adults are on wing from May to September.